Hiking is ___ in spring,I think.A.a great fun B.great fun C.great funs D.great funny并说明

问题描述:

Hiking is ___ in spring,I think.A.a great fun B.great fun C.great funs D.great funny
并说明

B
fun 是不可数名词,抽象名词,所以没复数,也不能在前面加a
great fun 很有意思,等于“very interesting"
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